18375066 has 32 divisors (see below), whose sum is σ = 41083200. Its totient is φ = 6087600.

The previous prime is 18375059. The next prime is 18375083. The reversal of 18375066 is 66057381.

It is a self number, because there is not a number n which added to its sum of digits gives 18375066.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8716 + ... + 10616.

It is an arithmetic number, because the mean of its divisors is an integer number (1283850).

Almost surely, 2^18375066 is an apocalyptic number.

18375066 is an abundant number, since it is smaller than the sum of its proper divisors (22708134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18375066 is a wasteful number, since it uses less digits than its factorization.

18375066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091 (or 2085 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 18375066 is about 4286.6147482600. The cubic root of 18375066 is about 263.8819203347.

It can be divided in two parts, 1837 and 5066, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 18375066 in words is "eighteen million, three hundred seventy-five thousand, sixty-six".